Suppose that the earth will support a population of 16 billion people. According to the United Nations there were approximately 2 billion people in 1925 and 4 billion people in 1975. Let P(t) denote the population of the earth t years after 1925. Assume that human population growth follows the logistic model dP = kP(16 – P). dt (a) Find function P(t). (b) Use the logistic model to predict the population in 2020. (c) According to the model, during which year will the population reach 12 billion?
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Hello! How do you solve part (a), (b), and (c) of the question attached below?
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